Woodbine Formation
(Late Cretaceous; Gulfian Series) at surface, covers 26 % of this area Woodbine Formation
Walnut Clay
(Early Cretaceous) at surface, covers 2 % of this area Walnut Clay
Terrace deposits
(Pleistocene and Holocene) at surface, covers 2 % of this area Terrace deposits
Alluvium
(Holocene) at surface, covers 2 % of this area Alluvium
Paluxy Sand
(Early Cretaceous) at surface, covers 0.5 % of this area Paluxy Sand
Kiamichi Formation
(Early Cretaceous; Comanchean Series) at surface, covers 0.5 % of this area Kiamichi Formation
Duck Creek Limestone
(Early Cretaceous; Comanchean Series) at surface, covers 0.2 % of this area Duck Creek Limestone
Glen Rose Limestone
(Early Cretaceous) at surface, covers < 0.1 % of this area Glen Rose Limestone